Dnia 21.12.2020 o godz. 16:33:57 James B. Byrne pisze: > I have finally gotten to the point that the certificate errors are not the > Java > issue, or at least they should not be, since I can use Java and the keystore > to > successfully connect to Postfix, albeit on port 465.
If you are able to connect via 465, then maybe the application just isn't designed to use "inline" TLS, but rather uses only SMTP-over-TLS? The latter is supported on port 465, while submission via port 587 requires first plaintext connection and then dynamic in-session switchover to TLS, using STARTTLS command. Maybe your application just does not support that? -- Regards, Jaroslaw Rafa r...@rafa.eu.org -- "In a million years, when kids go to school, they're gonna know: once there was a Hushpuppy, and she lived with her daddy in the Bathtub."